Roughing machine



E. E. WINKLEY RoUn'ING MACHINE Jan. 20, 1942;

Filed Feb. 5 1940 2 Sh eets-Sheet l Jan. 20, 1942.- E. E. WINKLEYRomaine MACHINE Filed Feb. 5, '1940 2 Sheets-Sheet 2 Fig.4

Patented Jan. 20, 1942 i BJOUGIHNG MACHINE;

Erastus. E. Winkley, Lynn, Mass, assignor to United: Shoe MachineryCorporation, Borough of Flemington, N: J., a corporation of New JerseyApplication February 5, 1940,.Serial No. 817,290

(or. ee -1 Claims;

This invention relates to; roughing machines and will. be. describedherein: as embodiedin a machine. for" toughening; the-woverlasted marginof the upper of a lastedzshoein. order to prepare ityfor the reception:of cement. The invention, however, is..notlimitedainzallits aspects toembodiment. in-anupper roughing machine, certain features thereof being.readily adaptable to roughing machines used for other purposes such, forexample, ,asrougheningoutsolesor other shoe parts.

When roughening the overlasted margin of a shoe upper, it isdesirablethata uniformly thin layer of material be removed fromthe-surface of the work and experience has'taught that this operation ismost satisfactorily performed with a rotary tool such aswa-.wire:brush.. Inasmuch? as there: are: usually radial. pleats and: wrinkles. inthe; overlastedmargin: of the; upper; it is necessary; in ordertoinsuretreatment of. all ofthe exposed surfaces, that. the direction ofaction of the.- tool be. transverse to the overlastedmargin of theshoeupper,; from the outer. edge of the shoe bottom. inward.

In order to avoidtheformation of a-substantial concavity'orv trough inthe roughened band or stripe witha brush-which rotatesand cutscrosswiseof theband, it is'customary to use abrush of rather large diameter sincethe. greater the diameter of the brush. the less'the" amount ofconvexity in its face in a segment of a given width. Large brushes areexpensive. and their accommodation in a machine. sometimes imposesinconvenient limitations upon the machine design.

It is anobject of the present inventionto provide a. compactly; designedroughingv machine in which can be used. arotary roughing. tool ofrelatively small. diameter,, which tool,. however,

operates in a path that approaches a straight line as closely as wouldthe. operative, face of a tool of, a diameter so greatvas to exceedpractical limits,

With the above stated'object in view, a feature of .the inventionconsists in thecombination, with a rotary roughingtool and driving meansfor rotating said tool, of means for oscillatingsaid' tool bodily whileit is. rotating. In. the illustrated machine, the tool. is rotated" at asubstantially constant. speed. and. is1'simult'aneously. oscillatedbodily at. alower. speed" about an axis outsidev of the; toolitselfflthe oscillatory movement of'the toolbeing in the same. directionas the movement of its periphery resulting, from the. continuousrotation aboutits own axis. movement is. preferably obtained" byjournaling the toolat the free end. of a swinging arm of substantial;length and continually oscillating the arm about a; fixed" pivot whilethe tool rotates. Theresult. of. this is. that. the cutting face of theThis. compound tool. at. the place where: it acts upon the. workmoveslin. a nearly, flat arc, theradiusof-which is the distance-fromtheperipheryof the toollto the; pivot about which. the arm oscillates, andthis radius can have any desired: magnitude within reason.

A further feature of the inventionv is to be recognized. in the.combination. with the above described roughing tool. of a shoe supportpositioned to'sustain alasted shoe withtheoverlasted margin of its upperdisposed across the path of action of the tool. Theshoe. supportpreferably comprises a roll mounted belowthe level of the roughing toolwith means for rotatingthe roll about a horizontal axisperpendicularto-the axis of rotation ofthetool and means for raising andlowering the roll at will to cause the shoe to be presented properly tothe tool asthe-roughing operation progresses around the margin. of theshoe bottom.

These and other advantageous features. ofth invention, including a.novel structure for retaining the roughing toolupon itssupportbutpermitting itsinstantaneous removal therefrom, will be better understoodand appreciated upon readingthe following detailed description ofamachine embodying the invention in connection withthe accompanyingdrawingsin which.

Fig. 1 is a side elevation with parts of. the housing removed. torevealv the operating mechanism;

Fig. 2 is a'front elevation;

Fig. 3 is a plan view of thatpart ofthemechanism which imparts combinedrotary, and oscillatory movement to the roughing tool; and

Fig. 4is asectional view of thetooL.

Referring tothe drawings, lllindicates ahousing of which parts.v areremoved to reveal the mechanism therein. Power is. transmitted. from a.motor l2 by a belt [4 to theroughing tool. rotating mechanism, and by abelt. I6. to a pulley l8 aifixed to a. shaft 20. from which. are derivedthe rotary motionot the work'supportingroll and the oscillatory movementof, the roughing tool.

The roughing tool, as illustrated, consistsof a wire brush 22 rotatablysustained upon astud 24 secured inthe outer end of an arm-26, which ispivotally mounted upon a shaft 28-, about the axis of which the armcanoscillate. Afiixed'to the shaft 28 is a pulley 30 aroundwhich thebelt l4passes and by which the shaft 28 is rotated. Also affixed to the shaft28 is a pulley connected by a belt to a pulley 36 bywhich the roughingbrush is rotated. Thus, whenthe motor I2 is running, the roughing brushwill be rotated continuously by power transmitted through the belts I4,34. r

The mounting of the tool-carrying arm 26 1mm? prises a sleeve 38 whichisloose upon their shaft 28 and to which the-arm 26 is-se'cured.Thelarm;

as shown, is made in two sections connected together by bolts st,passing through slots $2 in one of the sections, to provide foradjustment of the length of the arm in order to obtain the propertension in the belt 34.

Projecting rearward from the sleeve 33 i an arm 44 having a longitudinalhole in which a rod 46 is slidable. The outer ende of the rod 46 carriesan eccentric strap it which surrounds an eccentric i] fixed upon theshaft 28 When the motor i2 is running, this shaft 28 which is driven bythe belt it also rotates continuously and, consequently, the eccentric56 will cause continual oscillation of the sleeve 33 and up and downmovement of the tool-supporting arm 26. The radius of the arc, in whichthe operative portion of the roughing brush 22 oscillates, is equal tothe distance between the center of the shaft 28 and the point where thebrush engages the shoe. It will be apparent from an inspection of Fig. 1that the effect will be the same as if a brush rotating about a fixedaxis and having that large a radius were being used.

In order to facilitate the proper presentation of the shoe to theroughing brush, a large, work supporting roll 52 is provided. This rollis carried by a shaft 54 journaled in a housing 56, the rear portion ofwhich is formed to enclose a worm gear 58 secured to the shaft E l. Theworm gear 58 meshes with a worm 6b fixed upon the shaft and the housing55 carries bearings which are supported by and freely rotatable upon thesaid shaft so that the housing, together with the worm iii;

gear 58 and the shaft 54 contained therein, can

swing about the axis of the shaft 253. The purpose of this arrangementis to permit the roll 52 to be raised or lowered at will while themachine is running, in order thatt he shoe may be presented accuratelyto the roughing brush. The housing 55 is connected by a rod 62 to atreadle 64, which is normally elevated by a spring 68 to sustain thework-supporting roll 52 in the position shown in full lines in Fig. 1.By depressing the treadle, the roll may be lowered to the positionindicated by dotted lines or to any intermediate position.

In order to predetermine the upper and lower limits of movement of theroll 52, upper and lower adjustable stops 63, Til are provided. Thesestops are mounted in a slot 72 in a stationary guide 'Mbetween which anda similar parallel stationaryguide 16 a suitably formed portion it ofthe housing 56 is vertically movable.

The structure and mounting of the roughing brush 22 are best illustratedin Figs. 3 and 4. .The active elements of the brush consist of the usualwire bristles arranged in the form of an annulus and secured in a ringwhich is pushed upon a sleeve 82 having a flange 84 for confining thebristles at one side of th brush. A rubber washer 86 is pressed againstthe other side of the brush by a metallic washer 88 engaged by a nut 90threaded upon the end of the sleeve 82.

The'pulley 36 has a hollow hub 92 upon which the sleeve 82 has an easy,sliding fit, and a pin 9-4 projecting from the side of the pulley enters.a holein the fiange 845 to prevent relative rotation of the brush andth pulley. The brush,

although it is positively driven by the pulley 36,

is entirely unsecured and can be instantly removed from the hub of thepulley without the use of tools.

Inorderto retain the roughing brush in operativeposition upon the pulleyhub 92, there is provided, for closing an opening in the side of the.housing Iii, a closure member 95 which is hinged to the rest ofthehousing at 93. An abutment disk lilil is adjustably secured in theclosure member 96 and is arranged to engage the end of the sleeve 32when the member 96 is in closed position, as illustrated in Figs. 2 and3, thus retaining the roughing tool and its pulley upon the stud 24.,The upper hinge portion of the closure member 96 has a square corner I02(Fig. 3) against one or the other of the two sides of which bears aspring pressed pin W4 serving to retain the closure member in eitherclosed or open position but permitting said member to be moved instantlyfrom one position to the other. This construction permits the roughingtool to be removed for sharpening or replacement by merely opening theclosure member 95 and picking the unsecured tool off its support.

In order to aid the operator in controlling the presentation of the shoeto the roughing tool, there is provided a gage Elli, the shank portiontilt of which is slidably mounted in a portion iii) of the housing I!)and threaded for the reception of an adjusting nut H2 by means of whichthe position of the gage may be varied as desired. A set screw l Mserves to clamp the gage rigidly in adjusted position.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a shoe roughing machine, the combination of a rotary roughingtool, driving means for rotating said tool, means for oscillating saidtool bodily in a plane at right angle to its axis of rotation while itis rotating, and a shoe support so positioned relatively to the toolthat a lasted shoe may be sustained upon said support with theoverlasted margin of the shoe upper properly presented to the action ofthe roughing tool.

2. In a roughing machine, the combination of a rotary roughing tool;driving means for rotating said tool, a shoe support positioned tosustain a lasted shoe with the overlasted margin of it u per disposedacross the path of action of the tool, and means for oscillating thetool bodily across said overlasted margin.

3. In a shoe roughing machine, the combination of a rotary roughingtool, driving means for rotating said tool about a horizontal axis, ashoe supporting roll mounted below the level of the roughing tool andoffset horizontally from the axis thereof a distance approximately equalto the radius of the tool, and means for rotating said r011 about ahorizontal axis perpendicular to the axis of rotation of the tool.

4. In a shoe roughing machine, the combination of a rotary roughingtool, driving means for rotating said tool, a shoe supporting rollmounted below the level of the roughing tool and ofiset horizontallyfrom the axis thereof a distance approximately equal to th radius of thetool, power means for rotating said roll about a horizontal axis, andmeans for raising and lowering said roll at will during operation of thetool and roll..

5. In a roughing machine, the combination of a housing having an openingtherein, a stud within the housing near said opening, a pulley having ahub rotatably sustained on the stud, an unsecured roughing toolsustained on said hub, and a movable closure member for said openingadapted to engage and retain the tool upon the hub when said member isin position to close the opening. v 1

' ERASTUS E. WINKLEY.

